Android uncheck select all checkbox on Recycler item uncheck

I have recycler view items with Checkbox component and implemented common "Check All" button. When I "uncheck" the button in list item, I want to "uncheck" common "Select All" Checkbox outside the recycler view.

I having issue in accessing the common "Select All" Checkbox in Adapter.

In my adapter class added below code,

private class UserViewHolder extends RecyclerView.ViewHolder {
    public TextView title;
    public CheckBox commonCheckbox, itemCheckbox;
    public UserViewHolder(View view) {
        super(view);
        itemCheckbox=view.findViewById(R.id.itemcheckbox);
        title=view.findViewById(R.id.title);
        commonCheckbox = view.findViewById(R.id.commoncheckbox);
    }
}

In onBindViewHolder, I implemented the following checked listener,

userViewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (isChecked){
                userViewHolder.commonCheckbox.setChecked(false);
            }
        }
    });

But, commonCheckbox showing null pointer exception. Thanks in advance.